草灌乔结合是水土保持植物措施的基本特征 ,符合黄河上中游地区的自然规律和经济规律 ,能发挥更强的防护功能 ,产生更好的经济效果。黄河上中游地区的水土保持生态建设 ,应本着种草起步、草灌先行、草灌乔结合的原则进行治理开发。草灌乔的结合应因时因地采用划管封育、草田轮作、林 (果 )草 (粮 )间作套种等多种适宜的形式 ,充分发挥其保持水土的巨大潜力 Combination of grass and shrubs is the basic feature of soil and water conservation plant measures in line with the laws of the upper and middle reaches of the Yellow River and the natural laws of economy, can play a stronger protective function, resulting in better economic results. The ecological construction of soil and water conservation in the upper and middle reaches of the Yellow River shall be governed by the principles of grass planting, grass and shrub irrigation, and combination of grass, irrigation and joist. The combination of grass and shrub Qiao should be due to the use of pipe sealing, grass rotation, forest (fruit) intercropping grass and other suitable forms, give full play to its great potential to maintain soil and water